Can anyone tell me what this is?

[BoRhap]

Just opened a window and found this in the frame. It's about 3" long.

Can anyone tell me what it is and if I need to torch the entire house or not.

[Summerorjustmaybe]

Have some virtual matches.......

[isseywithcats]

that looks like it could be the start of a wasps nest i would call enviromental health out to check it

[Whywonttheyletmeusemyusername]

Jesus christ.....you'll have to move....far away

[OnlyFoolsnMothers]

Call rentokill asap